Hollow packing-ring for stuffing-boxes.



'the stuffing box or the like.

' eUsTAv HHN, or BERLIN, cnn-MANY.

HOLLOW PACKING-R-ING- FOR STUFFING-BOXES.

To all whom Ait mag/concern:-

Be it known that I, GUs'rAv HUHN, manu' facturer, citizen of Germany, subject of the King of Prussia and Emperor of Germany, residing at 6 Oldenburgerstrasse, Berlin, in the Kingdom'of Prussia and Empire'of Germany, have invented 'a new and useful Im'- .provement in Hollow Packing Ri sforbtuHing-Box'es and the Like, of which t e following Vis a specification. f

Hollow packi g rings for stufling boxes and the like, made of flexible orsoft metal and filled with movable materialA as graphite were until now always made round (circular, oval, and the like) in cross section.- When in use'and by the pressure ,of the gland these rings would gradually conform to the sha e corresponding to the space available and t e shape of the ressing surface, whereby the cross sectiont ereof generally became more or less rec tangu1ar.` Such iiexible rings, filled-with movable material are cut transversely to form sections to provide for their ready insertion into the o1nt,and the .cut

ends are closed by equa y soft metal, forinstance by plugs, metal plates, soldered joints and the like, to prevent the escapev of the filling through said ends. The deforma-l tion andchange of section, caused bythe compression in use will frequently cause leakage at the closed ends,.as the connection between the closing iece, as for instance the plug and the meta of the ring cannot withstand the heavy strain of the deformation, and the pressure is transmitted in round rings with round .plugs on one point or along a single line only.

` The present invention avoids this defect,

by forming the rings of such sha e in cross section as they would assume whi e in use in Therefore, the closures at the ends of the rings are made lof corresponding shape. During use there will consequently occur only a slight deformation of the rings and the strain on the closures -will be less and by no means torsional. These rings may be com letely closed or they ma,

be filled with a 111 ricant as graphite, whic is permitted toA gradually escape during use 'through certain openings provided 4in "the walls of the rings.v

The abject ofthe erably accom lishe and lower sur aces ofthe rings flat.

In the accompanying drawings; ligure l speoicationjof 'Letters Patent. `.pplicaton filed September 7, 1906. vSerial No. 338,671.-

-rund section when in use in stuiingboxes present invention is pref--vi by making vthe upper .,Patented sent. se. ieos.

isa perspective view of a ackin'g ring con-` structed in accordance' wit this invention; F1g.2 1s an end view of one section thereof with parts broken out to show the filling conj- In the accom anying drawing the invention is exempl' cd in one design in Figs. 1 and 2, the ring 1 there shown belng rectangular or square in cross section and cut trans-1 l versely with the cut ends closed by-s'oft metal plug-like closures as 2.

In Fig. 2 a part of the shell has been removed, to show the filling 3. The rings may also consist ofseveral sectional rings placed on each other and supplementing each other to obtain the re. uired' section. T he'total section produced y such combination then has the same shape as produced in rings of and the like. Hence the ring made of soft material and having plane upper and bot- 'ftaile therein; Fig. '3 is an end Aview"of'"a 'mo edform thereof. Fig.4 is adetailsectional view.

tom surfaces may -consist of any number ofv rings placed one on the other, the 'contact surfaces of which may have any suitable?! shape. Fig. 3 is a type of such a ring, consistmg of two rings 4 and 5 triangular in cross section. It is not necessary that all rings should be hollow and filled with movable material, same of them may be made as solid rings of soft or flexible metal. In Fig. 3 for instance, the upper ring 4 is hollow and the bottom ring 5 solid. The single rings supplement each other to a square section.l f claim as my invention :4-

1. A packing ring for stuffing boxes and the like comprising a hollow split ring composed of soft metal and, havingthe ends l.thereof Iiattened on their upper and lower facer. and provided with soft metal plug like closures.

2. A packingring for stuffing boxes coin-l prising a hollow soft metal 'split ring having the ends thereof flattened at their upper and lower surfaces and provided with soft metal closures. conforming inf shape to the end openings.

1 3. A packing ring for stuffing boxes comprisinga h ollow split,ring composed of soft metal and filled with a ccmpressible substance and'having the ends thereof flattened with soft metal plug like closures.

4. In a packing ring' for stufling boxes, the

- f, their upper and lower faces and providedr combination of a hollow split ringlconiposed of soft metal and filled with a movable substance, the upper and bottom surfaces of the ring being flattened and plug like soft metal Stoppers arranged in the ends of said {iattened hollow metal ring.

5.' In a packing ring for stufhng boxes, they combination of a hollow sectional ring illed with a movable substance and having the upper and lower surfaces thereof iattened, said fdattened hollow sections being composed of soft metal, metal Stoppers arranged in the ends of said sections, some of the sections com osing the ring being made solid and the ot ers hollow and 'Iilled with a movmy hand in presence of two subscribing wit- 25 IICSSGS.

GUSTAV HUHN.

Witnesses:

WOLDEMAR HAUPT, HENRY HAsPER. 

